login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A005617 Number of fanout-free Boolean functions of n variables using And, Or, Xor, Not, and Majority gates.
(Formerly M1985)
2
2, 2, 10, 122, 2554, 75386, 2865370, 133191386, 7319102842, 464161640378, 33365010466330, 2680736773291418, 238072159069838266, 23157446685020355194, 2448496007747625525850, 279603850797891071481434, 34294941015273001096282618 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=0..16.

E. A. Bender and J. T. Butler, Asymptotic approximations for the number of fanout-free functions, IEEE Trans. Computers, 27 (1978), 1180-1183. (Annotated scanned copy)

J. T. Butler, Letter to N. J. A. Sloane, Dec. 1978.

K. L. Kodandapani and S. C. Seth, On combinational networks with restricted fan-out, IEEE Trans. Computers, 27 (1978), 309-318. (Annotated scanned copy)

Index entries for sequences related to Boolean functions

CROSSREFS

Sequence in context: A304642 A005613 A005616 * A011248 A069240 A000371

Adjacent sequences:  A005614 A005615 A005616 * A005618 A005619 A005620

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

EXTENSIONS

a(0) prepended and more terms from Sean A. Irvine, Jul 21 2016

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 24 19:02 EDT 2020. Contains 338009 sequences. (Running on oeis4.)